Buderus GB402-320-5, Инструкции по установке и обслуживанию для подрядчиков

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10 Inspection and servicing
Logano plus GB402 – 6 720 820 700 (2018/01) 42
10.9.4 Fitting the gas line to the gas valve
▶ Insert a new O-ring into the gas valve flange.
▶ Secure the flange of the gas connection again to the gas valve using 4
screws.
10.9.5 Fitting the ventilation air unit
▶ Push the ventilation air hose together with the connector onto the
ventilation air collector and secure with a hose clip at the upper
adaptor.
10.10 Check for water leaks during operation
▶ Start the boiler and check all gaskets for leaks under full load using a
leak detection agent.
▶ For further leak checks of the entire gas train, see chapter 7.15,
page 30.
10.11 Checking the ionisation current
To ensure trouble-free operation, the ionisation current at partial and full
load (and burning flame) should be at least 15 μA.
The (flame) ionisation current can be read off on the RC35 programming
unit under "SERVICE MENU DIAGNOSIS/MONITOR VALUE"
(

Chapter 7.14.1, page 30).
10.12 Completing inspection and maintenance
10.12.1 Removing meters
10.12.2 Installing casing parts
▶ Fit all casing sections (

Fig. 37, page 30).
10.12.3 Checking the gas/air ratio
▶ Measuring carbon dioxide content (

Chapter 10.5,page 35).
10.12.4 Confirming inspection and maintenance
▶ Sign the inspection and maintenance report in this manual
(

Chapter 10.14, page 43).
10.13 Replacing the gaskets subject to time in use
The following gaskets must be replaced after expiry of the specified time
in use.
NOTICE: System damage through contaminated air.
▶ Prior to fitting the ventilation air hose, check the
ventilation air grille (integrated into the lower hose
adaptor) for contamination and clean if required.
NOTICE: Risk of system damage due to short circuit!
▶ Cover the fan and other points at risk prior to
checking for leaks.
▶ Never apply leak detector spray to cable entries,
plugs or electrical cables/leads. Do not allow it to
drip onto them either.
Observe the instructions for the BC10 and RC35.
gasket
Replacement after x years in use for type of
use:
Standard
1)
1) Applicable to all conventional uses of the boiler as a gas condensing boiler for
DHW and central heating.
Industrial
2)
2) Applicable to use of the boiler for industrial heat generation with constantly high
flow temperatures and burner loads, for example.
Mixture manifold gasket (O-ring) after 5 years after 3 years
Cleaning cover gasket (on the
heat exchanger) after 5 years after 3 years
Table 17 Replacement according to time in use
DANGER: Risk to life through escaping gases!
▶ Always replace the electrode block gasket when
replacing electrodes.
▶ During every service, replace the gasket at the gas
connection flange of the gas valve.
▶ Generally, replace damaged gaskets or ones that
appear aged.
We recommend the replacement of the electrode block
as part of the annual service.